JPH02176357A - Electric heater - Google Patents

Abstract

PURPOSE:To perform both heating of a whole room and heating of a local part and to improve facility and safety of the device by a method wherein a surface-form heater is secured in an adhered state on the inner surfaces of the front and the rear plates of a boxform body, an air suction port is formed in a bottom part, and a heating air flow discharge port in a top plate surface. CONSTITUTION:In order that a surface-form heater 3 is mounted in an adhered state on the inner surface of a body 1, front and rear plates 1a and 1b are directly heated to high-efficiently radiate a radiant heat from the front and rear surfaces of the body 1 and can be used for heating of a local part. A passage which the surface-form heater 3 is positioned, facing is formed at the interior. Since a discharge port 6 and a suction port 4 are formed above and below, respectively, a rising air flow flows smoothly, and the whole of a room is high-efficiently heated through a convection action. The surface-form heater 3 is mounted in a vertical surface-form manner on the inner surface of the body and since the surface is coated with a resin film 2, even when a slender metallic substance is dropped in error through the discharge port 6 of a top plate 7, it is prevented from being hooked to the surface heater 3. Even when it is hooked thereto, it does not make direct contact with a conduction part, resulting in the prevention of a risk of an electric shock.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a radiant convection electric heater having a heat generating section inside the main body.

BACKGROUND OF THE INVENTION Conventionally, electric heaters of this type have been constructed as shown in FIGS. 3 and 4. In other words, 101 is the main case 10
A heat generating part is provided at the bottom of the main body case 102, and a suction port 104 is provided at the bottom of the main body case 102, and an air outlet 106 is provided on a top plate 106 provided at the top surface of the main body case 102. 107 is a stand that supports the main body.

” When electricity is applied to the heat generating portion 101 in the configuration described in Section 2, the heat generating portion 1
01 supplies radiant heat to the front part by warming the main body case 102, and also sucks air through the suction port 104 of the bottom plate 103 provided at the bottom of the main body case 102, and Hot air flows upward from the air outlet 106, and the entire room is heated by natural convection.

Problems to be Solved by the Invention In such a conventional configuration, the heat generating portion 101 in the main body case 102 mainly receives convective heat supplied from the air outlet 106 of the top plate 106 on the top surface, and The radiant heat of the room is weak, and heating is mainly done by heating the entire room.9
, local heating had the problem of low efficiency.

In addition, if a long and thin metal object is accidentally dropped from the air outlet 106 of the main body case 102, if the metal object comes into contact with the heat generating part 101 and the main body case 102, there is a risk of electric shock when touching the main body. had.

Although panel heaters are still known as radiant heating devices, they are mainly used for local radiant heating and have a small heating capacity for heating an entire room, so they have the problem of being less effective at heating the entire room.

The present invention solves these problems by providing an easy-to-use electric heater that can heat both the entire room and local areas, and eliminates the risk of electric shock even if a metal object is accidentally dropped into the main unit. The purpose of this invention is to provide an electric heater with high safety.

Means for Solving the Problems In order to solve the problems, the present invention provides a box-shaped main body with a small depth dimension, a planar heater fixed tightly to the inner surfaces of the front plate and the rear plate of this main body, The device is configured to include an air suction port provided at the bottom of the main body and a heated airflow discharge port provided on the top surface of the main body.

Function: With this configuration, the planar heater is attached directly to the side surface of the main body, so a large amount of radiant heat is radiated to the side of the main body, and a surface parallel to the direction of heat convection is distributed inside the box-shaped main body. Since the sheet heaters are arranged, the rising air flows smoothly within the main body, and the heat from the sheet heaters is efficiently distributed throughout the room.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. As shown in the figure, the front plate 1a and the rear plate 1b of the main body 1
A planar heater 3 insulated by a resin film 2 is attached to the inner surface of each of the heaters in close contact with each other. Bottom plate 6 of main body 1
An air intake port 4 is provided, and a hot air outlet 6 is provided on the top plate of the main body 1. Further, the main body 1 is supported by a stand 8 such that a distance of 1''+il between the bottom plate 5 and the floor surface is provided.

The surface of the sheet heater 3 is covered with a resin film 2.

In the above configuration, the planar heater 3 is attached in close contact with the inner surface of the main body 1, so that it directly heats the front plate 1a and the rear plate 1b of the main body 1 and efficiently radiates radiant heat from the rear surface of the main body 1. It can be used as local heating. In addition, a passage is formed inside the main body 1 in which the planar heaters 3 face each other, and the air outlet 6 and the suction port 4 are opened at the top and bottom, so that the rising air flows smoothly upward from the inside of the main body 1. Because it flows, the entire room can be efficiently heated by convection. Furthermore, since the planar heater 3 is installed vertically on the inner surface of the main body 1 and its surface is coated with the resin film 2, even if a long and thin metal object is accidentally dropped from the air outlet 6 of the top plate 7, the planar heater 3 will remain intact. 3, and even if it does, it does not directly touch the conductive part of the sheet heater 3, thereby preventing the risk of electric shock.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the planar heater is closely attached to the inner surfaces of the front plate and the rear plate of the box-shaped main body, and openings are provided at the top and bottom of the main body. It is possible to simultaneously perform local heating by radiating heat across the surface and overall heating by the convection effect by smoothly generating upward airflow, and is also safe, with no risk of electric shock from ingress of conductive foreign matter. This makes it possible to realize a high-performance electric heater.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an electric heater according to an embodiment of the present invention;
3 is a sectional view of the conventional electric heater, and FIG. 4 is a perspective view of the same. 1...Main body, 1a...Front plate, 1b...
...Rear plate, 3... Planar heater, 4...
Suction port, 6...Blowout port.

Claims (1)

[Claims] A box-shaped main body with a small depth dimension, a planar heater fixed tightly to the inner surfaces of the front and rear plates of the main body, an air suction port provided at the bottom of the main body, and a top surface of the main body. An electric heater having a heated airflow outlet provided in the.